diff --git a/Gemfile.lock b/Gemfile.lock
index 624f6fd..cf9cddd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,7 +7,8 @@ GEM
       multi_json (~> 1.3)
       thread_safe (~> 0.1)
       tzinfo (~> 0.3.37)
-    addressable (2.4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     atomic (1.1.101)
     aws-eventstream (1.1.0)
     aws-partitions (1.388.0)
@@ -82,6 +83,7 @@ GEM
       rack (>= 1.2, < 3)
     polyglot (0.3.3)
     power_assert (1.1.1)
+    public_suffix (5.0.0)
     rack (1.6.8)
     rake (10.3.2)
     rdoc (4.3.0)